2017–2020 Hyundai Elantra
By Ray Delgado ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026
Save $74 by doing it yourself! Shop cost: $100
Quick answer: Cabin Air Filter Replacement on a 2017–2020 Hyundai Elantra is rated Easy and takes about 20 minutes. Parts cost about $26. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Cabin Air Filter | TRQ CFA04610 | $25.95 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Open the glovebox and empty it. Turn the two stoppers inside the glovebox to the LEFT to unlock them; the glovebox swings fully open, exposing the filter area. No damper arm or screw on this model — just the twist stoppers.
With the glovebox hanging down, look behind it. You'll see a black plastic cover over the filter opening. This is the filter door. The white cabin filter is behind this cover.
Remove the black filter cover by pinching the two sides of the cover together and pulling it straight off. It should come off easily. Set it aside. The white cabin filter is now visible in the opening.
Pull the old white cabin filter straight out. Note the airflow arrow direction on the old filter — the new one goes in the same way. If the filter is dirty/clogged, that's why your AC smells or has weak airflow.
I tell everyone in my shop to note which way the airflow arrow points before you yank the old filter — put the new one in backwards and it loads up wrong and your AC wheezes. Snap a photo; it takes two seconds.
Slide the new filter into the housing, matching the airflow arrow direction from the old one. Ensure it's fully seated. Reinstall the black cover by pushing it back on until the sides click. The cover should sit flush.
Swing the glovebox back up. Turn the two stoppers to the RIGHT to lock them. Close the glovebox. Test the AC — airflow should be strong and clean. Replace every 15,000-20,000 miles or when airflow drops.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
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